sql injection fix - ported back to trunk from branches/2.3 ...

git-svn-id: https://svn.code.sf.net/p/postfixadmin/code/trunk@1326 a1433add-5e2c-0410-b055-b7f2511e0802

backup.php

@@ -123,11 +123,9 @@ if ($_SERVER['REQUEST_METHOD'] == "GET")
          {
             while ($row = db_assoc ($result['result']))
             {
-               foreach ($row as $key=>$val)
+                $fields = array_keys($row);
-               {
+                $values = array_values($row);
-                  $fields[] = $key;
+                $values = array_map('escape_string', $values);
-                  $values[] = $val;
-               }
 
                fwrite ($fh, "INSERT INTO ". $tables[$i] . " (". implode (',',$fields) . ") VALUES ('" . implode ('\',\'',$values) . "');\n");
                $fields = "";